﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing.Drawing2D;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace SerialPort_Pro
{
  
        /// <summary>
        /// Class UCSignalLamp.
        /// Implements the <see cref="System.Windows.Forms.UserControl" />
        /// </summary>
        /// <seealso cref="System.Windows.Forms.UserControl" />
        public class UCSignalLamp : UserControl
        {
            /// <summary>
            /// The is show border
            /// </summary>
            private bool isShowBorder = false;

            /// <summary>
            /// Gets or sets a value indicating whether this instance is show border.
            /// </summary>
            /// <value><c>true</c> if this instance is show border; otherwise, <c>false</c>.</value>
            [Description("是否显示边框"), Category("自定义")]
            public bool IsShowBorder
            {
                get { return isShowBorder; }
                set
                {
                    isShowBorder = value;
                    Refresh();
                }
            }

            /// <summary>
            /// The lamp color
            /// </summary>
            private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };

            /// <summary>
            /// Gets or sets the color of the lamp.
            /// </summary>
            /// <value>The color of the lamp.</value>
            [Description("灯颜色，当需要闪烁时，至少需要2个及以上颜色，不需要闪烁则至少需要1个颜色"), Category("自定义")]
            public Color[] LampColor
            {
                get { return lampColor; }
                set
                {
                    if (value == null || value.Length <= 0)
                        return;
                    lampColor = value;
                    Refresh();
                }
            }

            /// <summary>
            /// The is highlight
            /// </summary>
            private bool isHighlight = true;

            /// <summary>
            /// Gets or sets a value indicating whether this instance is highlight.
            /// </summary>
            /// <value><c>true</c> if this instance is highlight; otherwise, <c>false</c>.</value>
            [Description("是否高亮显示"), Category("自定义")]
            public bool IsHighlight
            {
                get { return isHighlight; }
                set
                {
                    isHighlight = value;
                    Refresh();
                }
            }

            /// <summary>
            /// The twinkle speed
            /// </summary>
            private int twinkleSpeed = 0;

            /// <summary>
            /// Gets or sets the twinkle speed.
            /// </summary>
            /// <value>The twinkle speed.</value>
            [Description("闪烁间隔时间（毫秒），当为0时不闪烁"), Category("自定义")]
            public int TwinkleSpeed
            {
                get { return twinkleSpeed; }
                set
                {
                    if (value < 0)
                        return;
                    twinkleSpeed = value;
                    if (value == 0 || lampColor.Length <= 1)
                    {
                        timer.Enabled = false;
                    }
                    else
                    {
                        intColorIndex = 0;
                        timer.Interval = value;
                        timer.Enabled = true;
                    }
                    Refresh();
                }
            }
            /// <summary>
            /// The timer
            /// </summary>
            Timer timer;
            /// <summary>
            /// The int color index
            /// </summary>
            int intColorIndex = 0;
            /// <summary>
            /// Initializes a new instance of the <see cref="UCSignalLamp"/> class.
            /// </summary>
            public UCSignalLamp()
            {
                this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
                this.SetStyle(ControlStyles.DoubleBuffer, true);
                this.SetStyle(ControlStyles.ResizeRedraw, true);
                this.SetStyle(ControlStyles.Selectable, true);
                this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
                this.SetStyle(ControlStyles.UserPaint, true);
                this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
                this.Size = new Size(50, 50);
                this.SizeChanged += UCSignalLamp_SizeChanged;
                timer = new Timer();
                timer.Interval = 200;
                timer.Tick += timer_Tick;
            }

            /// <summary>
            /// Handles the Tick event of the timer control.
            /// </summary>
            /// <param name="sender">The source of the event.</param>
            /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
            void timer_Tick(object sender, EventArgs e)
            {
                intColorIndex++;
                if (intColorIndex >= lampColor.Length)
                    intColorIndex = 0;
                Refresh();
            }
            /// <summary>
            /// Handles the SizeChanged event of the UCSignalLamp control.
            /// </summary>
            /// <param name="sender">The source of the event.</param>
            /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
            void UCSignalLamp_SizeChanged(object sender, EventArgs e)
            {
                var maxSize = Math.Min(this.Width, this.Height);
                if (this.Width != maxSize)
                    this.Width = maxSize;
                if (this.Height != maxSize)
                    this.Height = maxSize;
            }

            /// <summary>
            /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
            /// </summary>
            /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
            protected override void OnPaint(PaintEventArgs e)
            {
                base.OnPaint(e);
                var g = e.Graphics;
                //g.SetGDIHigh();
                Color c1 = lampColor[intColorIndex];
                g.FillEllipse(new SolidBrush(c1), this.ClientRectangle);

                if (isHighlight)
                {
                    GraphicsPath gp = new GraphicsPath();

                    Rectangle rec = new Rectangle(5, 5, this.Width - 10, this.Height - 10);
                    gp.AddEllipse(rec);

                    Color[] surroundColor = new Color[] { c1 };
                    PathGradientBrush pb = new PathGradientBrush(gp);
                    pb.CenterColor = Color.White;
                    pb.SurroundColors = surroundColor;
                    g.FillPath(pb, gp);
                }

                if (isShowBorder)
                {
                    g.DrawEllipse(new Pen(new SolidBrush(this.BackColor), 2), new Rectangle(4, 4, this.Width - 8, this.Height - 8));
                }
            }
        }


    }

